Testing

Running the Java test suites is most easily done from directly in an
IDE that supports TestNG (IntelliJ IDEA community edition and Eclipse both do). You can navigate to any class file with unit tests or
in the special "suites" directory and right-click and "run.

What is nice about doing this "in IDE" is the ability to set breakpoints
and use the debugger to fix an issue, figure out how some functionality
works, or develop tests in the first place.

From the commandline is possible if necessary, you would need to adjust
your classpath and create a TestNG xml file, like this: